A method and equipment for preparing polytetrafluoroethylene circuit boards

A polytetrafluoroethylene and circuit board technology, applied in the field of electronics, can solve the problems of inability to meet high-density assembly requirements, insufficient film bonding force, weak peel resistance, etc., and achieve improved peel strength and high peel resistance. , the effect of enhanced peel strength
CN105908134BActive Publication Date: 2018-11-09广东省广新创新研究院有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
广东省广新创新研究院有限公司
Publication Date
2018-11-09

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Abstract

The invention discloses a making method and a making apparatus for depositing a metal film with ultrahigh bonding strength on the surface of a polytetrafluoroethylene substrate based on an ion beam technology, and a making method and a making apparatus of a circuit board. The making method for depositing the metal film with ultra strong bonding force comprises the following steps: 1, making a metal "injection + diffusion" layer: carrying out large-beam cleaning on the substrate by using a gas ion source, and injecting a metal element to the substrate layer by using a 40KV high-energy metal vapor vacuum arc (MEVVA) ion source to form the metal "injection + diffusion" layer; and 2, making the metal film: depositing the metal film with the thickness of 1-10[mu]m by using a 90DEG magnetic filtered cathode vacuum arc (FCVA) system. The metal film and a polytetrafluoroethylene base material made by adopting the making methods and the making apparatuses have very high bonding force and very high stripping resistance.
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Description

technical field

[0001] The invention relates to the field of electronic technology, in particular to a preparation method and equipment for a metal "injection+diffusion" layer on the surface of a polytetrafluoroethylene base material. Background technique

[0002] At first, the substrates of electronic circuits were PCB boards and flexible circuit boards, but with the advancement of science and technology and the development of various information terminal equipment, PTFE substrates were discovered and used in various fields. Polytetrafluoroethylene is also known as PTFE. Due to factors such as fluorine atoms in the molecular structure, PTFE exhibits high chemical stability, strong high and low temperature resistance, outstanding non-stickiness, abnormal lubricity and excellent electrical insulation properties. Aging resistance and radiation resistance, extremely small water absorption and other characteristics are known as the "king of plastics". Widely used in aerospace, ...

Claims

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